fix: COP 170 minor units

jkidd13 · jkidd13 · commit b3e9f04a20a9 · 2023-08-01T17:01:23.000-04:00
COP 170 should have minor units of 2, not 0 https://www.iso.org/iso-4217-currency-codes.html
diff --git a/currencies.go b/currencies.go
@@ -1346,7 +1346,7 @@ func (c CurrencyCode) Digits() int { //nolint:gocyclo
 	case CurrencyCNY:
 		return 2
 	case CurrencyCOP:
-		return 0
+		return 2
 	case CurrencyCOU:
 		return 2
 	case CurrencyKMF:
